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CVE Record

CVE-2021-20428: IBM Security Guardium 11.2 could allow a remote attacker to obtain sensitive information when a detailed te...

IBM Security Guardium 11.2 could allow a remote attacker to obtain sensitive information when a detailed technical error message is returned in the browser. This information could be used in further attacks against the system. IBM X-Force ID: 196315.

MediumCVSS 5.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

IBM Security Guardium 11.2 may expose sensitive technical details in browser error messages. The issue does not indicate data alteration or service disruption, but disclosed internals can help attackers plan follow-on attacks against a Guardium deployment.

Executive priority

Treat as a moderate-priority hygiene issue. It is not described as actively exploited, but Guardium is a security-sensitive platform, so exposed administrative surfaces should be remediated promptly.

Technical view

CVE-2021-20428 is a network-reachable information disclosure issue in IBM Security Guardium 11.2. CVSS 3.0 score is 5.3, with no privileges or user interaction required and low confidentiality impact only.

Likely exposure

Exposure is limited to organizations running IBM Security Guardium 11.2 where the affected browser-facing interface is reachable by an attacker, especially if accessible beyond trusted administrative networks.

Exploitation context

The source bundle does not show CISA KEV listing or cited active exploitation. IBM X-Force marks exploit maturity as unproven in the CVSS vector. The practical risk is reconnaissance value for later attacks.

Researcher notes

Available evidence does not name a CWE, endpoint, trigger condition, or fixed version in the provided bundle. Keep validation non-invasive and focus on version exposure, error disclosure behavior, and IBM advisory status.

Mitigation direction

  • Identify any IBM Security Guardium 11.2 deployments.
  • Review IBM advisory guidance for the official remediation path.
  • Restrict Guardium browser access to trusted administrators and networks.
  • Avoid exposing Guardium management interfaces directly to the internet.
  • Monitor for unusual error responses and reconnaissance activity.

Validation and detection

  • Confirm deployed Guardium versions against the affected 11.2 version.
  • Check whether browser error pages expose internal technical details.
  • Verify remediation using IBM's advisory-specific instructions.
  • Review access controls for Guardium administrative interfaces.
  • Confirm logs capture unexpected error generation patterns.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2021-20428 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.3 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/S:U/I:N/AC:L/A:N/UI:N/C:L/PR:N/AV:N/RC:C/RL:O/E:U

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.3CVSS 3.0MediumCVSS:3.0/S:U/I:N/AC:L/A:N/UI:N/C:L/PR:N/AV:N/RC:C/RL:O/E:U3.91.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.3Medium
CVSS 3.0 vector shape for CVE-2021-20428Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/S:U/I:N/AC:L/A:N/UI:N/C:L/PR:N/AV:N/RC:C/RL:O/E:U

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
IBMSecurity Guardium11.2Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.